User blog comment:Acronym0/I got problem/@comment-31267872-20170804155500

Just use a Pokémon with Covet instead. Most Pokémon that do learn Covet learn it at a very early level. Eevee would probably be a well-known example, it learns Covet at Level 1, so if you can make Eevee eggs / have an Eevee with Covet, or some other Pokémon with Covet, you're good to go.